Refactor operator reshape
Refactor operator reshape

mrirecon/bart,mrirecon/bart,mrirecon/bart,sdimoudi/bart,sidward/bart,sdimoudi/bart,sidward/bart,sidward/bart,sdimoudi/bart,sidward/bart,mrirecon/bart,mrirecon/bart,sdimoudi/bart,sidward/bart,sdimoudi/bart